"The new gym will be called Mountainside Fitness at La Camarilla in honor of the Johnson family's work there," said Tom Hatten, CEO of Mountainside, which is in escrow for the land.

No purchase price is yet available.

Hatten said the new 40,000-square-foot gym will go up on 4 acres of the prime site. The rest of the land could be sold or developed later.

La Camarilla has several tennis and other sport courts and a pool, but those will go away when the gym is redeveloped.

"I know some tennis players and swimmers will be disappointed, and I hope they can find a new place," said Hatten, who recently opened his 17th Valley Mountainside Fitness location near the Scottsdale Waterfront. "Those sports just aren't part of our zone."

George Johnson(Photo: Associated Press)

Construction is scheduled to start on the Mountainside Camarilla next summer.

La Camarilla members recently received a letter saying the gym would close in February.

Hatten said he has been friends with Johnson's daughter Barb for 30 years and that is how the sale came together.